DSP-4000 Series
Users Manual
iv
Single Tests for Coaxial Cabling................................................................................. 4-16
Running a Single Test on Coaxial Cabling .......................................................... 4-16
Single Test Results for Coaxial Cabling .............................................................. 4-18
Monitoring Network Activity...................................................................................... 4-19
Identifying Hub Port Connections............................................................................... 4-22
Monitoring Impulse Noise........................................................................................... 4-22
Changing the Impulse Noise Threshold............................................................... 4-23
Running the Impulse Noise Test.......................................................................... 4-23
Noise Test Results................................................................................................ 4-25
Determining Hub Port Capabilities ............................................................................. 4-26
Using the Tone Generator ........................................................................................... 4-26
5 Viewing and Printing Saved Reports........................................................... 5-1
Viewing, Renaming, and Deleting Test Reports......................................................... 5-1
Printing Test Reports................................................................................................... 5-2
Configuring the Serial Port .................................................................................. 5-3
Printer Interface Cable ......................................................................................... 5-3
Printing................................................................................................................. 5-4
If the Printer Does Not Respond .......................................................................... 5-6
Viewing and Printing Reports from a PC.................................................................... 5-6
6 Calibrations and Custom Test Standards................................................... 6-1
Calibrating the Test Tool............................................................................................. 6-1
Calibrating the Permanent Link Adapters ................................................................... 6-3
NVP Calibration.......................................................................................................... 6-3
Configuring a Custom Test ......................................................................................... 6-4
7 Basic Cabling Testing................................................................................... 7-1
LAN Cable Construction............................................................................................. 7-1
Twisted Pair Cable............................................................................................... 7-2
Coaxial Cable....................................................................................................... 7-4
Basic Link Connections............................................................................................... 7-5
Channel Connections................................................................................................... 7-6
Permanent Link Connections ...................................................................................... 7-7
Attenuation (Insertion Loss)........................................................................................ 7-8
Noise ...........................................................................................................................7-9
Characteristic Impedance ............................................................................................ 7-10
Minimizing Impedance Discontinuities....................................................................... 7-11
Crosstalk...................................................................................................................... 7-11
NEXT.......................................................................................................................... 7-12
FEXT and ELFEXT .................................................................................................... 7-12
Locating NEXT and ELFEXT Problems..................................................................... 7-14
Split Pairs and NEXT........................................................................................... 7-16
Minimizing Crosstalk........................................................................................... 7-17
Power Sum Values ...................................................................................................... 7-17
Propagation Delay and Delay Skew............................................................................ 7-18
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